M5.6 earthquake 133 km SW of Vaini, Tonga
A magnitude 5.6 earthquake struck 133 km SW of Vaini, Tonga on Fri, Sep 9, 1966, 10:17 AM GMT+13 (21:17 UTC), 149 km (92 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.6 (mw), moderate
- Local time
- UTC
- 1966-09-08 21:17:29 UTC
- Depth
- 148.8 km (92.5 mi), intermediate-depth
- Epicenter
- 22.047° S, 176.091° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.35
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem843230. Read Mon, Sep 21, 2026, 8:14 PM UTC.